More precompiled snapshotting.

runtime/vm/stub_code.h

Index: runtime/vm/stub_code.h
diff --git a/runtime/vm/stub_code.h b/runtime/vm/stub_code.h
index 3a5ffc18693b4c2f048ce1b693c9e16b72aea35b..3d3c016fc935733cfa6f59f0db97f05b2855534b 100644
--- a/runtime/vm/stub_code.h
+++ b/runtime/vm/stub_code.h
@@ -15,6 +15,8 @@ class Code;
 class Isolate;
 class ObjectPointerVisitor;
 class RawCode;
+class SnapshotReader;
+class SnapshotWriter;
 
 
 // List of stubs created in the VM isolate, these stubs are shared by different
@@ -98,6 +100,9 @@ class StubCode : public AllStatic {
   // only once and the stub code resides in the vm_isolate heap.
   static void InitOnce();
 
+  static void ReadFrom(SnapshotReader* reader);
+  static void WriteTo(SnapshotWriter* writer);
+
   // Generate all stubs which are generated on a per isolate basis as they
   // have embedded objects which are isolate specific.
   static void Init(Isolate* isolate);